Craig Mayer, Nick WIlliams, Vojtech Huser
Lister Hill National Center for Biomedical Communications, National Library of Medicine, NIH, Bethesda, MD

See the full regCTG repository at https://github.com/lhncbc/CRI/tree/master/regCTG

To return to the list of conditions and view other reports go to https://lhncbc.github.io/CRI/regCTG/regCTG-condition_report_links.html


Study Counts

Type Study_count
Total_Studies 2912
interventional 2404
Observational 497
Registry 11

Studies over Time

```

Interventional Trials

Intervention Type

intervention_type Study_Count
Drug 1356
Behavioral 285
Biological 209
Drug|placebo 165
Biological|placebo 73
Other 66
Procedure 37
Biological|Drug 28
Device 27
Dietary Supplement|placebo 16
Drug|Other 14
Dietary Supplement 13
Behavioral|Other 12
Diagnostic Test 11
Behavioral|Drug 10
Drug|Procedure 10
Combination Product 6
Device|Other 6
Biological|Other 5
Behavioral|Device 4
Combination Product|placebo 4
Device|Drug 4
Genetic 3
Behavioral|Diagnostic Test 2
Behavioral|Drug|Other 2
Behavioral|Other|Procedure 2
Behavioral|Procedure 2
Biological|Device|placebo 2
Biological|Other|placebo 2
Device|placebo 2
Diagnostic Test|Other 2
Dietary Supplement|Drug 2
Dietary Supplement|Drug|placebo 2
Drug|Other|placebo 2
Other|placebo 2
Behavioral|Biological 1
Behavioral|Biological|Drug 1
Behavioral|Device|Procedure 1
Behavioral|Diagnostic Test|Drug 1
Behavioral|Dietary Supplement 1
Biological|Device 1
Biological|Drug|Other 1
Biological|Drug|placebo 1
Biological|Procedure 1
Combination Product|Device 1
Device|Procedure 1
Drug|Genetic 1
Drug|placebo|Procedure 1
Drug|Radiation 1
Other|Procedure 1
placebo 1

Count of Studies by Intervention (normalized and mapped)

Interventions over Time

Weekly studies for each intervention

Studies by Country

Country Study_Count
United States 1167
United States|Puerto Rico 140
NA 135
Spain 67
France 63
South Africa 53
Thailand 45
United Kingdom 43
Canada 30
Kenya 30
United States|Canada 23
Uganda 19
Australia 17
Tanzania 17
Germany 16
Italy 15
Belgium 14
Switzerland 14
Brazil 13
China 13
United States|Canada|Puerto Rico 13
Netherlands 12
India 11
Zambia 11
Botswana 8
Russian Federation 8
Malawi 7
Mexico 7
Taiwan 7
United States|South Africa 7
Argentina 6
Denmark 6
Peru 6
Japan 4
Mozambique 4
Singapore 4
United States|Peru 4
United States|Puerto Rico|Tanzania 4
Vietnam 4
Zimbabwe 4
Ireland 3
Romania 3
South Africa|Uganda 3
Swaziland 3
United States|Puerto Rico|South Africa 3
United States|South Africa|Thailand 3
United States|Switzerland 3
United States|Thailand 3
United States|United Kingdom 3
Austria 2
Burkina Faso 2
Burkina Faso|Cameroon|Senegal 2
Ethiopia 2
Germany|United Kingdom 2
India|Malawi|South Africa|Tanzania|Uganda|Zambia|Zimbabwe 2
Indonesia 2
Kenya|Uganda 2
Malawi|South Africa|Uganda|Zimbabwe 2
Norway 2
Rwanda 2
United States|Australia 2
United States|Bahamas|Brazil|Puerto Rico 2
United States|Botswana 2
United States|Brazil 2
United States|Brazil|Puerto Rico 2
United States|France|United Kingdom 2
United States|Germany 2
United States|Kenya 2
United States|Tanzania 2
United States|Uganda 2
Argentina|Austria|Belgium|Brazil|Denmark|France|Germany|Greece|Ireland|Italy|Mexico|Netherlands|Portugal|Spain|Sweden|Switzerland|United Kingdom 1
Argentina|Brazil|Canada|United Kingdom 1
Argentina|Brazil|Chile|China|Colombia|Kenya|Mexico|Peru|Romania|Russian Federation|South Africa|Thailand|Ukraine 1
Argentina|Brazil|India|Kenya|South Africa 1
Argentina|Brazil|Mexico|Peru|Russian Federation|South Africa|Thailand 1
Argentina|Canada|Mexico 1
Argentina|Colombia|Mexico|Panama|South Africa|Thailand 1
Argentina|France|South Africa|United States|Thailand 1
Argentina|Germany|Italy|Mexico|Poland|Portugal|Romania|Spain|Switzerland|United Kingdom 1
Argentina|South Africa|Thailand|United Kingdom 1
Argentina|Spain|Thailand 1
Armenia 1
Australia|Belgium|Germany|Italy|Netherlands|Spain|Sweden|Switzerland|United Kingdom 1
Australia|Brazil|France|Poland|Russian Federation|Spain|Sweden|United Kingdom 1
Australia|France|Germany|Italy|Spain|United Kingdom 1
Australia|United States|Austria|Brazil|Canada|Denmark|France|Germany|Poland|Puerto Rico|South Africa|Spain|Switzerland|United Kingdom 1
Austria|Belgium|Denmark|France|Germany|Greece|Hungary|Ireland|Italy|Netherlands|Poland|Portugal|Spain|Sweden|United Kingdom 1
Austria|Belgium|Denmark|France|Germany|Hungary|Ireland|Israel|Poland|Spain|Sweden|Switzerland|United Kingdom 1
Austria|Belgium|Denmark|Germany|Hungary|Israel|Portugal|Russian Federation|Spain|Switzerland|United Kingdom 1
Austria|Denmark|France|Germany|Hungary|Israel|Romania|Russian Federation|Spain|Switzerland|United Kingdom 1
Bahamas|France|Italy|Spain 1
Belgium|France 1
Belgium|France|Germany|Italy|Romania|Russian Federation|Spain|Switzerland|United Kingdom 1
Belgium|France|Spain 1
Belgium|Germany|India 1
Belgium|Netherlands 1
Botswana|Brazil|Haiti|Peru|South Africa|Uganda|Zambia|Zimbabwe 1
Botswana|Brazil|Malawi|Zimbabwe 1
Botswana|Kenya|Malawi|South Africa|Swaziland|Uganda|Zimbabwe 1
Botswana|Kenya|Malawi|South Africa|Uganda|Zambia|Zimbabwe 1
Botswana|Kenya|Rwanda|South Africa|Tanzania|Uganda|Zambia 1
Brazil|Canada|United States|Argentina|Australia|Austria|Denmark|France|Mexico|Netherlands|Portugal|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Sweden|Taiwan|Thailand|United Kingdom 1
Brazil|Chile|Mexico|Peru|South Africa|Thailand 1
Brazil|Estonia|India|Thailand 1
Brazil|Haiti|Peru|Trinidad and Tobago 1
Brazil|Malawi 1
Brazil|Panama 1
Bulgaria 1
Bulgaria|Hungary|Russian Federation 1
Burkina Faso|Côte D’Ivoire 1
Burkina Faso|Côte D’Ivoire|Mali|Togo 1
Burkina Faso|South Africa|Uganda|Zambia 1
Côte D’Ivoire 1
Cambodia 1
Cambodia|Côte D’Ivoire|South Africa 1
Cambodia|Thailand 1
Cameroon 1
Cameroon|Ghana|Nigeria 1
Cameroon|Kenya|Senegal|South Africa|Thailand|Uganda 1
Cameroon|Senegal 1
Canada|France 1
China|Korea, Republic of 1
China|Korea, Republic of|Singapore 1
Dominican Republic 1
Ecuador 1
Estonia 1
Estonia|France|Germany|Ireland|Italy|Latvia|Portugal|Russian Federation|Spain|United Kingdom 1
France|Germany|Puerto Rico|Mexico|United States|Argentina|Austria|Brazil|China|Russian Federation|South Africa|Thailand|Uganda|United Kingdom 1
France|Switzerland 1
France|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|Denmark|Germany|Greece|Guatemala|Hungary|Malaysia|Mexico|Netherlands|Panama|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Switzerland|Thailand|United Kingdom 1
France|United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|Colombia|Germany|Greece|Ireland|Italy|Mexico|Netherlands|Peru|Poland|Portugal|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Taiwan|United Kingdom 1
France|United States|Argentina|Australia|Belgium|Brazil|Canada|Israel|Italy|Mexico|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Thailand| 1
France|United States|Australia|Belgium|Canada|Germany|Italy|Netherlands|Poland|Spain|Sweden|Switzerland|United Kingdom 1
Gambia 1
Georgia 1
Germany|Hungary|Portugal|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|France|Spain|United Kingdom 1
Germany|Italy|Spain 1
Germany|Netherlands 1
Germany|Netherlands|Spain|Thailand|United Kingdom 1
Germany|Netherlands|United Kingdom 1
Germany|Thailand|United Kingdom 1
Germany|United States|Australia|Canada|Denmark|France|Italy|Sweden|Switzerland|United Kingdom 1
Ghana 1
Haiti 1
Haiti|India|Malawi|South Africa|Tanzania|Uganda 1
Hungary 1
India|Malawi|South Africa|Tanzania|Thailand 1
India|South Africa|Uganda 1
India|United States|Botswana|Brazil|Kenya|Malawi|South Africa|Thailand|Zimbabwe 1
Iran, Islamic Republic of 1
Israel 1
Italy|Spain 1
Italy|United States|Puerto Rico 1
Jamaica 1
Kenya|Malawi|Rwanda|South Africa|Tanzania 1
Kenya|Malawi|South Africa|Tanzania 1
Kenya|Malawi|Uganda|Zambia|Zimbabwe 1
Kenya|Malawi|Uganda|Zimbabwe 1
Kenya|Rwanda 1
Kenya|Rwanda|Uganda 1
Kenya|Rwanda|United Kingdom 1
Kenya|South Africa|Tanzania 1
Kenya|South Africa|Uganda|Zimbabwe 1
Kenya|Tanzania|Thailand|Uganda 1
Kenya|Tanzania|Uganda 1
Kenya|Uganda|Zambia 1
Kenya|United Kingdom 1
Korea, Republic of 1
Latvia|Austria|Belgium|Denmark|France|Germany|Ireland|Italy|Netherlands|Portugal|Spain|Switzerland|United Kingdom 1
Lesotho 1
Liberia 1
Malaysia 1
Mauritius|Thailand 1
Mongolia 1
Mozambique|South Africa|Zimbabwe 1
Nepal 1
Netherlands|United Kingdom 1
Nigeria 1
Nigeria|Argentina|Australia|Chile|France|Germany|Hong Kong|India|Ireland|Malaysia|Mexico|New Zealand|Peru|Singapore|South Africa|Taiwan|United Kingdom 1
Norway|Sweden 1
Norway|Uganda 1
Portugal|Puerto Rico|United States|Argentina|Mexico|Russian Federation|South Africa 1
Puerto Rico 1
Puerto Rico|United States 1
Romania|Spain|United States|Australia|Belgium|Canada|Denmark|France|Germany|Italy|Netherlands|United Kingdom 1
Rwanda|South Africa|Tanzania 1
Senegal 1
South Africa|Tanzania 1
South Africa|Tanzania|Thailand|Zimbabwe 1
South Africa|Tanzania|Uganda|Zambia 1
South Africa|Tanzania|Uganda|Zimbabwe 1
South Africa|Tanzania|Zambia 1
South Africa|Thailand 1
South Africa|Thailand|Ukraine 1
South Africa|Uganda|Zambia 1
South Africa|Uganda|Zimbabwe 1
South Africa|United States|Argentina|Australia|Austria|Belgium|Brazil|Canada|Chile|Colombia|Costa Rica|Dominican Republic|France|Germany|Guatemala|Hong Kong|Indonesia|Italy|Mexico|Netherlands|Panama|Peru|Portugal|Puerto Rico|Singapore|Spain|Taiwan|Thailand|United Kingdom 1
South Africa|Zimbabwe 1
Spain|United States|Austria|Belgium|Canada|France|Germany|Italy|Latvia|Luxembourg|Poland|Portugal|Romania|Switzerland 1
Spain|United States|Canada|Italy|Netherlands|Portugal|Romania 1
Spain|United States|France|Germany|Italy|South Africa 1
Sweden 1
Sweden|Spain|United States|Argentina|Australia|Canada|France|Germany|Italy|Korea, Republic of|Mexico|Russian Federation|South Africa 1
Tanzania|Zambia 1
Uganda|Zimbabwe 1
Ukraine 1
United Kingdom|Germany|Ireland|Netherlands|Thailand 1
United States|American Samoa|Australia 1
United States|Argentina 1
United States|Argentina|Australia|Austria|Belgium|Brazil|Chile|Czechia|Denmark|Estonia|Finland|France|Germany|Greece|India|Ireland|Israel|Italy|Luxembourg|Malaysia|Mali|Mexico|Morocco|Nigeria|Norway|Peru|Poland|Portugal|Puerto Rico|South Africa|Spain|Sweden|Switzerland|Thailand|Uganda|United Kingdom 1
United States|Argentina|Australia|Austria|Belgium|Canada|Chile|Costa Rica|Dominican Republic|France|Germany|Greece|Hong Kong|India|Ireland|Italy|Malaysia|Mexico|Netherlands|Portugal|Puerto Rico|Romania|Spain|Switzerland|Taiwan|United Kingdom 1
United States|Argentina|Australia|Austria|Brazil|Chile|France|Germany|Guatemala|Hungary|Malaysia|Panama|Puerto Rico|Romania|South Africa|Spain|Taiwan|Thailand|United Kingdom 1
United States|Argentina|Australia|Belgium|Botswana|Canada|France|Germany|Ireland|Italy|Mexico|Netherlands|Poland|Portugal|Puerto Rico|Romania|Russian Federation|South Africa|Spain|Switzerland|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|France|Greece|Hungary|Italy|Mexico|Netherlands|Poland|Romania|Russian Federation|South Africa|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Belgium|Brazil|Canada|Chile|France|Italy|Mexico|Netherlands|Peru|Puerto Rico|Spain|United Kingdom| 1
United States|Argentina|Australia|Belgium|Canada|France|Germany|Italy|Korea, Republic of|Mexico|Netherlands|Portugal|Romania|Russian Federation|South Africa|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Belgium|Canada|France|Germany|Italy|Netherlands|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Australia|Canada|France|Germany|Italy|Korea, Republic of|Mexico|Russian Federation|South Africa|Spain|Sweden 1
United States|Argentina|Australia|Canada|France|Germany|Italy|Russian Federation|Spain|Taiwan|United Kingdom 1
United States|Argentina|Belgium|Brazil|Canada|France|Israel|Italy|Mexico|Portugal|Puerto Rico|Russian Federation|Singapore|South Africa|Spain|Thailand 1
United States|Argentina|Belgium|Canada|Spain|United Kingdom 1
United States|Argentina|Botswana|Brazil|China|Haiti|Peru|Puerto Rico|Thailand 1
United States|Argentina|Botswana|Brazil|Puerto Rico|South Africa 1
United States|Argentina|Botswana|Brazil|Puerto Rico|South Africa|Tanzania|Thailand|Uganda 1
United States|Argentina|Brazil|Canada|France|Germany|Italy|Mexico|Puerto Rico|Spain 1
United States|Argentina|Brazil|Canada|France|Germany|Italy|Poland|Puerto Rico|Spain|United Kingdom 1
United States|Argentina|Brazil|Canada|France|Italy|Panama|Romania|South Africa|Spain|Thailand 1
United States|Argentina|Brazil|Canada|France|Italy|Poland|Puerto Rico|Spain|United Kingdom 1
United States|Argentina|Brazil|Canada|France|Romania|South Africa|Spain 1
United States|Argentina|Brazil|Haiti|Kenya|Malawi|Puerto Rico|South Africa|Tanzania|Thailand|Uganda|Zambia|Zimbabwe 1
United States|Argentina|Brazil|Peru|South Africa|Thailand|Vietnam 1
United States|Argentina|Brazil|Puerto Rico|South Africa 1
United States|Argentina|Brazil|Puerto Rico|South Africa|Tanzania|Thailand 1
United States|Argentina|Canada|France|Italy|Mexico|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Thailand|United Kingdom 1
United States|Argentina|Colombia|Germany|Mexico|Peru|Romania|Russian Federation|South Africa|Spain 1
United States|Argentina|France|Guatemala|Mexico|Peru|Puerto Rico|Romania|Russian Federation|South Africa|Ukraine 1
United States|Argentina|Mexico|Panama 1
United States|Argentina|South Africa|Thailand|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|Denmark|Dominican Republic|France|Germany|Italy|Mexico|Netherlands|Portugal|Puerto Rico|Spain|Sweden|Switzerland|Thailand|United Kingdom 1
United States|Australia|Austria|Belgium|Brazil|Canada|Denmark|Dominican Republic|France|Germany|Italy|Mexico|Netherlands|Portugal|Puerto Rico|Spain|Switzerland|Thailand|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Denmark|France|Germany|Italy|Mexico|Netherlands|Portugal|Puerto Rico|Sweden|Switzerland|Thailand|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|France|Germany|Italy|Portugal|Puerto Rico|Spain|United Kingdom 1
United States|Australia|Austria|Belgium|Canada|Italy|Japan|Puerto Rico|Spain|Switzerland|Thailand|United Kingdom 1
United States|Australia|Austria|Brazil|Canada|Denmark|France|Germany|Poland|Puerto Rico|South Africa|Spain|Switzerland|United Kingdom 1
United States|Australia|Austria|Canada|Dominican Republic|Germany|Mexico|Puerto Rico|United Kingdom 1
United States|Australia|Austria|Canada|Finland|France|Germany|Italy|Japan|Puerto Rico|Spain 1
United States|Australia|Belgium|Brazil|Canada|Chile|China|Costa Rica|France|Germany|India|Mexico|Panama|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Thailand|United Kingdom 1
United States|Australia|Belgium|Brazil|Canada|France|Greece|Italy|Poland|Portugal|Romania|South Africa|Spain|Switzerland|United Kingdom 1
United States|Australia|Belgium|Canada|Czech Republic|France|Germany|Greece|Ireland|Italy|Netherlands|Poland|Puerto Rico|Russian Federation|Singapore|Spain|Switzerland|Taiwan|United Kingdom 1
United States|Australia|Belgium|Canada|Denmark|France|Germany|Greece|Italy|Netherlands|Portugal|Switzerland|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Italy|Mexico|Netherlands|Portugal|Puerto Rico|Spain|Switzerland|United Kingdom 1
United States|Australia|Belgium|Canada|France|Germany|Japan|Netherlands|Spain|United Kingdom 1
United States|Australia|Belgium|Canada|Germany|Netherlands|Spain|Switzerland|United Kingdom 1
United States|Australia|Canada|Chile|Colombia|France|Italy|Japan|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Netherlands|Spain|United Kingdom 1
United States|Australia|Canada|France|Germany|Italy|Russian Federation|Spain|United Kingdom 1
United States|Australia|Canada|France|Puerto Rico 1
United States|Australia|Canada|Germany|Netherlands|New Zealand|Switzerland|United Kingdom 1
United States|Australia|Canada|Puerto Rico 1
United States|Australia|Dominican Republic|France|Mexico|Netherlands|Spain|Thailand|United Kingdom 1
United States|Australia|France|Germany|Singapore|Spain|United Kingdom 1
United States|Australia|Puerto Rico 1
United States|Austria|Belgium|Canada|Chile|Costa Rica|France|Germany|Guatemala|Hungary|Israel|Italy|Malaysia|Panama|Peru|Portugal|Puerto Rico|Russian Federation|South Africa|Spain|Switzerland|Thailand|United Kingdom|Venezuela 1
United States|Austria|Belgium|Canada|France|Germany|Italy|Portugal|Puerto Rico|Spain|Switzerland|United Kingdom 1
United States|Austria|Canada|Denmark|France|Germany|Ireland|Italy|Netherlands|Spain|United Kingdom 1
United States|Belgium|Canada|China|Denmark|France|Germany|Italy|Mexico|South Africa|Spain|Sweden|Taiwan|United Kingdom 1
United States|Belgium|Canada|France|Germany|Italy|Portugal|Spain|United Kingdom 1
United States|Belgium|Canada|France|Poland|Puerto Rico|Spain|Sweden|Switzerland|United Kingdom 1
United States|Belgium|Canada|Romania|Russian Federation|South Africa|Spain 1
United States|Belgium|Dominican Republic|France|Italy|Mexico|Portugal|Puerto Rico|Russian Federation|Thailand|Uganda|United Kingdom 1
United States|Botswana|Brazil|India|South Africa|Tanzania|Thailand|Uganda|Zimbabwe 1
United States|Botswana|Brazil|Kenya|South Africa|Tanzania|Thailand|Uganda|Zimbabwe 1
United States|Botswana|Germany|South Africa 1
United States|Botswana|South Africa 1
United States|Brazil|Chile|France|Italy|Portugal|Spain|United Kingdom 1
United States|Brazil|Ecuador|Peru|South Africa|Thailand 1
United States|Brazil|Haiti|India|Malawi|Peru|South Africa|Thailand|Zimbabwe 1
United States|Brazil|Haiti|Jamaica|South Africa 1
United States|Brazil|Italy|Mexico|Portugal|Puerto Rico|South Africa|Spain|Thailand 1
United States|Brazil|Malawi|South Africa 1
United States|Brazil|Peru 1
United States|Brazil|Peru|Switzerland 1
United States|Brazil|Puerto Rico|South Africa|Thailand 1
United States|Brazil|South Africa 1
United States|Brazil|South Africa|Tanzania|Thailand 1
United States|Canada|Dominican Republic|France|Italy|Mexico|Netherlands|Portugal|Puerto Rico|Sweden|United Kingdom 1
United States|Canada|Dominican Republic|Japan|Spain|Taiwan|Thailand 1
United States|Canada|France|Germany|Israel|Italy|Mexico|Netherlands|Spain|Switzerland 1
United States|Canada|France|Germany|Italy 1
United States|Canada|France|Germany|Italy|Japan|Netherlands|Russian Federation|South Africa|Spain|United Kingdom 1
United States|Canada|France|Germany|Portugal|Puerto Rico|Spain|United Kingdom 1
United States|Canada|France|Germany|Spain 1
United States|Canada|France|Germany|United Kingdom 1
United States|Canada|France|Italy 1
United States|Canada|France|Italy|Poland|Puerto Rico|Spain 1
United States|Canada|France|Italy|Spain 1
United States|Canada|Netherlands|Puerto Rico 1
United States|Costa Rica|Panama|Puerto Rico 1
United States|Czechia|France|Germany|Hungary|Poland|Puerto Rico|Spain|United Kingdom 1
United States|Denmark 1
United States|Denmark|Germany 1
United States|Dominican Republic 1
United States|Dominican Republic|Russian Federation|Thailand|Uganda 1
United States|France 1
United States|France|Germany|Italy|Puerto Rico|Romania|Russian Federation|Spain|Switzerland 1
United States|France|Germany|Italy|Russian Federation|Spain 1
United States|France|Germany|Italy|South Africa|Spain 1
United States|France|Germany|Spain 1
United States|France|Germany|United Kingdom 1
United States|France|Spain 1
United States|Germany|Italy|Puerto Rico|Spain|United Kingdom 1
United States|Germany|Spain 1
United States|India 1
United States|Italy 1
United States|Italy|Argentina|Australia|Austria|Belgium|Brazil|Canada|Denmark|France|Germany|Greece|Mexico|Netherlands|Portugal|Spain|Switzerland|United Kingdom 1
United States|Italy|Puerto Rico| 1
United States|Kazakhstan 1
United States|Kenya|Puerto Rico|South Africa 1
United States|Kenya|Rwanda|South Africa 1
United States|Kenya|Tanzania|Uganda 1
United States|Malawi|South Africa|Zambia|Zimbabwe 1
United States|Mexico 1
United States|Netherlands 1
United States|Panama|United Kingdom 1
United States|Puerto Rico|South Africa|Zimbabwe 1
United States|Russian Federation 1
United States|Rwanda 1
United States|South Africa|Thailand|Uganda|Zimbabwe 1
United States|South Africa|Uganda 1
United States|South Africa|Zimbabwe 1
United States|Spain|Belgium|Canada|France|Italy|Portugal 1
United States|Taiwan|Argentina|Australia|Belgium|Canada|France|Germany|Italy|Mexico|Peru|Poland|Portugal|Romania|Russian Federation|Spain|Switzerland|United Kingdom 1
United States|Tanzania|Zambia|Zimbabwe 1
United States|Zimbabwe 1

Sites per Study

Site_count Study_Count
1 1240
2 184
3 126
4 73
5 72
6 51
7 49
8 36
9 37
10 31
11 24
12 27
13 18
14 15
15 31
16 9
17 24
18 17
19 11
20 17
21 5
22 13
23 13
24 10
25 8
26 8
27 8
28 6
29 5
30 10
31 4
32 9
33 3
34 6
35 6
36 7
37 10
38 2
39 10
40 5
41 3
42 5
43 1
44 6
45 8
46 4
47 5
48 4
49 3
50 4
51 6
52 6
53 3
54 4
55 1
56 5
57 2
58 2
59 2
60 2
61 2
62 5
63 2
64 2
65 1
66 1
67 1
68 4
69 1
70 1
71 2
72 3
74 1
75 1
76 2
77 3
78 2
80 4
82 1
83 2
84 2
87 2
88 2
89 2
90 1
91 1
93 1
95 1
96 1
97 1
99 3
101 1
102 2
103 1
105 1
107 2
109 1
115 1
117 3
119 1
120 1
129 1
133 1
134 1
140 1
145 1
146 1
167 1
172 1
174 1
178 1
180 2
202 1
218 1
233 1
361 1

Phase

Phase Study_Count
Phase 1 651
N/A 577
Phase 2 425
Phase 3 362
Phase 4 240
Phase 1/Phase 2 104
Phase 2/Phase 3 37
Early Phase 1 8

Number of Arms

Number_of_Arms Count_of_Studies
1 323
2 773
3 195
4 107
5 43
6 28
7 9
8 25
9 7
10 3
11 3
12 4
13 1
14 1
15 1
16 1
21 1
NA 879

Number of Updates

Count of Versions Count of Studies
1 318
2 205
3 264
4 291
5 222
6 183
7 143
8 106
9 67
10 78
11 62
12 46
13 35
14 29
15 21
16 27
17 24
18 12
19 12
20 14
21 12
22 17
23 8
24 10
25 12
26 9
27 15
28 7
29 4
30 5
31 7
32 7
33 3
34 7
35 4
36 6
37 3
38 5
39 6
40 6
41 10
42 6
43 5
44 4
45 2
46 2
47 2
48 3
49 1
50 1
51 1
52 1
53 4
54 1
55 2
56 2
57 2
58 1
59 1
60 1
61 1
62 1
64 1
65 2
66 2
67 2
68 3
69 1
70 1
72 4
74 1
81 1
82 2
83 1
88 1
91 1
96 1
99 1
102 1
103 1
107 1
111 1
114 1
116 1
124 1
128 1
129 1
144 1
149 1
182 1
189 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 20075 2086 9.623682
Contacts/Locations 7580 1681 4.509221
Recruitment Status 3302 1646 2.006075
Study Design 2430 1467 1.656442
None (earliest Version on record) 2404 2404 1.000000
Outcome Measures 2114 990 2.135353
Study Identification 2092 1200 1.743333
Sponsor/Collaborators 2016 1263 1.596199
Study Description 1879 800 2.348750
Eligibility 1595 823 1.938032
Arms 1561 878 1.777904
Interventions 1561 878 1.777904
Oversight 1131 899 1.258064
Conditions 1060 721 1.470180
References 929 655 1.418321
More Information 848 238 3.563025
Results 352 352 1.000000
Baseline Characteristics 223 153 1.457516
IPDSharing 190 157 1.210191
Reported Adverse Events 172 123 1.398374
Participant Flow 164 119 1.378151
Results Submission Events 121 121 1.000000
Documents 102 93 1.096774
2020 Outcome Measures 1 1 1.000000
Quality Control Review has not concludedReturned: May 1 1 1 1.000000

Enrollment Metrics by Phase

Measure Early.Phase.1 N.A Phase.1 Phase.1.Phase.2 Phase.2 Phase.2.Phase.3 Phase.3 Phase.4
Min. 6.00 4.00 2.00000 6.00000 5.0000 16.0000 10.000 2.0000
1st Qu. 11.50 50.00 19.00000 24.00000 41.5000 59.0000 150.000 32.5000
Median 57.00 180.00 31.00000 42.50000 87.0000 190.0000 373.000 76.0000
Mean 288.50 1395.19 49.69181 94.25962 187.6569 856.3514 1325.483 300.5607
3rd Qu. 320.25 551.50 56.50000 117.00000 200.0000 420.0000 743.500 186.0000
Max. 1325.00 299038.00 718.00000 905.00000 5029.0000 12000.0000 192814.000 18696.0000

Trial Group Type

group_type Group_Count
Experimental 2385
NA 879
Active Comparator 714
Placebo Comparator 345
No Intervention 172
Other 152
Sham Comparator 13

Intervention Model

intervention_model Study_Count
Parallel Assignment 1166
NA 557
Single Group Assignment 459
Crossover Assignment 148
Factorial Assignment 57
Sequential Assignment 17

Primary Purpose

primary_purpose Study_Count
Treatment 1542
Prevention 535
NA 77
Basic Science 53
Health Services Research 48
Supportive Care 48
Other 43
Diagnostic 34
Screening 19
Educational/Counseling/Training 4
Device Feasibility 1

Observational Studies

Studies by Country

Country Study_Count
United States 196
NA 54
United States|Puerto Rico 28
Thailand 24
France 17
Germany 16
Spain 13
Italy 10
Canada 9
United Kingdom 9
Uganda 7
Brazil 6
China 5
Switzerland 5
Taiwan 5
Japan 4
Kenya 4
South Africa 4
Zambia 4
Botswana 3
Ghana 3
Korea, Republic of 3
Lesotho 3
Australia 2
Belgium 2
Cameroon 2
Denmark 2
Ethiopia 2
Indonesia 2
Malawi 2
Russian Federation 2
Swaziland 2
United States|Canada 2
Zimbabwe 2
Argentina 1
Argentina|Brazil|Mexico 1
Australia|Italy|Spain 1
Austria|Belgium|France|Germany|Ireland|Italy|Netherlands|Poland|Portugal|Spain|Sweden|Switzerland|United Kingdom 1
Austria|Poland 1
Austria|Poland|Romania 1
Belgium|Germany|Ireland|Italy|Netherlands|Spain|United Kingdom 1
Belgium|Germany|Italy|Romania|Spain|Switzerland|United Kingdom 1
Botswana|Brazil|India|Malawi|Peru|South Africa|Thailand|Zimbabwe 1
Botswana|Brazil|South Africa 1
Brazil|India|Malawi|South Africa|Zimbabwe 1
Brazil|Peru|South Africa 1
China|Russian Federation 1
Ecuador|Peru 1
Finland|Ireland|Netherlands|Portugal|Switzerland 1
Haiti|Peru 1
Hong Kong 1
India 1
Israel 1
Malawi|South Africa|Uganda|Zambia|Zimbabwe 1
Malawi|South Africa|Uganda|Zimbabwe 1
Mali 1
Netherlands 1
Nigeria 1
Poland 1
Rwanda|South Africa 1
South Africa|Tanzania|Zambia 1
Tanzania 1
Uganda|Zimbabwe 1
United States|American Samoa|Australia|Belgium|Canada|Chile|Denmark|Finland|Gambia|Germany|Japan|Morocco|New Zealand|Poland|Portugal|Uruguay 1
United States|Argentina|Australia|Canada|France|Germany|Netherlands|Spain|Taiwan|Thailand|United Kingdom 1
United States|Argentina|Brazil|Guatemala|Mexico|Peru|South Africa 1
United States|Australia|Argentina|Austria|Belgium|Brazil|Canada|Estonia|France|Germany|Ireland|Israel|Italy|Japan|Lithuania|Luxembourg|Martinique|New Zealand|Norway|Peru|Poland|Puerto Rico|Spain|Switzerland|Thailand|United Kingdom 1
United States|Australia|Brazil|Canada|Thailand 1
United States|Australia|Brazil|Canada|Zimbabwe 1
United States|Belgium|Brazil|Canada|France|Germany|Greece|Italy|Puerto Rico|Spain|United Kingdom 1
United States|Brazil|Peru|South Africa 1
United States|Brazil|South Africa|Tanzania|Thailand 1
United States|Haiti 1
United States|India|Kenya|Thailand 1
United States|Malawi|South Africa|Tanzania|Uganda 1
United States|South Africa 1
Vietnam 1

Sites per Study

Site_count Study_Count
1 308
2 22
3 22
4 9
5 11
6 9
7 2
8 10
9 8
10 6
11 6
12 4
13 3
14 2
15 6
17 5
18 4
19 5
20 3
21 5
22 1
23 3
24 3
26 2
27 1
29 3
30 1
32 1
34 2
35 2
36 2
38 2
39 1
40 1
42 1
45 2
46 1
47 1
48 1
51 1
53 1
58 1
60 1
63 2
66 1
73 1
77 1
83 1
84 1
90 1
91 1
102 1
223 1
267 1

Number of Updates

Count of Versions Count of Studies
1 42
2 54
3 85
4 43
5 45
6 36
7 21
8 16
9 16
10 23
11 8
12 14
13 7
14 7
15 2
16 2
17 6
18 1
19 2
20 6
22 3
23 2
24 5
25 2
26 5
27 4
28 3
29 1
30 1
31 1
33 2
34 1
35 2
37 1
39 2
46 2
47 1
48 1
53 1
56 1
57 1
62 1
67 1
68 2
71 1
74 1
97 2
101 1
106 1
125 1
126 1
149 1
151 1
152 2
171 1
174 1
175 1

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 5467 455 12.015385
Contacts/Locations 1415 342 4.137427
Study Description 1013 195 5.194872
Study Design 736 374 1.967914
Recruitment Status 636 371 1.714286
None (earliest Version on record) 497 497 1.000000
Eligibility 468 241 1.941909
Sponsor/Collaborators 445 247 1.801619
Study Identification 353 231 1.528139
Outcome Measures 262 159 1.647799
Oversight 214 173 1.236994
Groups 211 154 1.370130
Interventions 211 154 1.370130
References 211 119 1.773109
Conditions 187 134 1.395522
More Information 45 21 2.142857
Results 43 43 1.000000
IPDSharing 25 25 1.000000
Baseline Characteristics 10 8 1.250000
Documents 7 5 1.400000
Results Submission Events 6 6 1.000000
Participant Flow 5 4 1.250000
Reported Adverse Events 4 3 1.333333

Enrollment Metrics

Measure Observational
Min 0.0000
1st Qu 55.5000
Median 164.0000
Mean 909.8463
3rd Qu 501.0000
Max 64186.0000

Observation Model

observational_model Study_Count
Cohort 251
NA 126
Case-Only 38
Case Control 27
Case-Control 24
Other 17
Natural History 6
Defined Population, Natural History 4
Ecologic or Community 2
Case-Crossover 1
Case Control, Natural History 1

Time Perspective

time_perspective Study_Count
Prospective 290
NA 80
Cross-Sectional 67
Retrospective 38
Other 16
Longitudinal, Prospective 4
Cross-Sectional, Retrospective/Prospective 1
Longitudinal 1

Registries

Studies by Country

Country Study_Count
United States 4
Spain 2
Brazil 1
Ethiopia 1
France 1
Mexico 1
Tanzania 1

Sites per Study

Site_count Study_Count
1 9
4 1
6 1

Number of Updates

Count of Versions Count of Studies
1 2
2 2
4 2
6 2
7 1
13 2

Update History Change Type

Change Type Count_of_Changes Count_of_Studies ratio
Study Status 48 9 5.333333
Contacts/Locations 15 7 2.142857
Study Design 14 8 1.750000
Recruitment Status 13 9 1.444444
None (earliest Version on record) 11 11 1.000000
Sponsor/Collaborators 8 3 2.666667
Eligibility 6 3 2.000000
Study Identification 6 2 3.000000
Conditions 5 2 2.500000
Oversight 5 4 1.250000
Study Description 5 3 1.666667
Outcome Measures 3 3 1.000000
References 3 2 1.500000
Groups 2 1 2.000000
Interventions 2 1 2.000000
IPDSharing 1 1 1.000000

Enrollment Metrics

Measure Registries
Min 1.00
1st Qu 103.25
Median 173.50
Mean 495.90
3rd Qu 762.50
Max 2000.00

Registry Model

observational_model Study_Count
Cohort 4
Other 3
Ecologic or Community 2
Case Control 1
NA 1

Time Perspective

time_perspective Study_Count
Prospective 10
Cross-Sectional 1

Follow-up

target_duration Study_Count
12 Months 3
1 Day 1
1 Year 1
24 Months 1
3 Years 1
31 Years 1
5 Years 1
6 Months 1
7 Months 1